Sign holder



FIG. 1 is a front perspective view of a sign holder embodying my invention;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a first side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a second side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a sign holder, as shown and described. 